[PATCH AUTOSEL 6.11 203/244] drm/amdgpu: fix unchecked return value warning for amdgpu_gfx

Sasha Levin
2024-09-25T11:51:08Z

From: Tim Huang <tim.huang@amd.com>

[ Upstream commit c0277b9d7c2ee9ee5dbc948548984f0fbb861301 ]

This resolves the unchecded return value warning reported by Coverity.

Signed-off-by: Tim Huang <tim.huang@amd.com>
Reviewed-by: Jesse Zhang <jesse.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index 1849510a308ad..3ff39d3ec317c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -882,8 +882,11 @@ int amdgpu_gfx_ras_late_init(struct amdgpu_device *adev, struct ras_common_if *r
int r;

if (amdgpu_ras_is_supported(adev, ras_block->block)) {
- if (!amdgpu_persistent_edc_harvesting_supported(adev))
- amdgpu_ras_reset_error_status(adev, AMDGPU_RAS_BLOCK__GFX);
+ if (!amdgpu_persistent_edc_harvesting_supported(adev)) {
+ r = amdgpu_ras_reset_error_status(adev, AMDGPU_RAS_BLOCK__GFX);
+ if (r)
+ return r;
+ }

r = amdgpu_ras_block_late_init(adev, ras_block);
if (r)
@@ -1027,7 +1030,10 @@ uint32_t amdgpu_kiq_rreg(struct amdgpu_device *adev, uint32_t reg, uint32_t xcc_
pr_err("critical bug! too many kiq readers\n");
goto failed_unlock;
}
- amdgpu_ring_alloc(ring, 32);
+ r = amdgpu_ring_alloc(ring, 32);
+ if (r)
+ goto failed_unlock;
+
amdgpu_ring_emit_rreg(ring, reg, reg_val_offs);
r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
if (r)
@@ -1093,7 +1099,10 @@ void amdgpu_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v, uint3
}

spin_lock_irqsave(&kiq->ring_lock, flags);
- amdgpu_ring_alloc(ring, 32);
+ r = amdgpu_ring_alloc(ring, 32);
+ if (r)
+ goto failed_unlock;
+
amdgpu_ring_emit_wreg(ring, reg, v);
r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
if (r)
@@ -1129,6 +1138,7 @@ void amdgpu_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v, uint3

failed_undo:
amdgpu_ring_undo(ring);
+failed_unlock:
spin_unlock_irqrestore(&kiq->ring_lock, flags);
failed_kiq_write:
dev_err(adev->dev, "failed to write reg:%x\n", reg);
--
2.43.0